Bottom bar is the stick footer that you see with any application. It provides important navigation to the user. Swipecart allows you to customize Bottom Bar UI.
To change bottom bar UI please edit the layout. Under Theme Settings you will see Bottom Bar Settings.
Bottom Bar Settings has multiple UI you can choose from and Select the UI variant you want to use with your application.
Once you select the UI variant you want please hit the Save button to save your changes. You can see the preview of the new bottom bar from the preview app.
The icon colors for the bottom bar is the theme primary color. Which can be changed from Theme Style Settings.